Answer:
How do I have the same problem as a high schooler when im in 6th grade
Step-by-step ex
jsn=55
Answer:
1- 4x -7 =29, x= 9
2-x/3 - 8 = 12, x=60
Step-by-step explanation:
4x-7 =29
4x= 29 +7
4x= 36
x= 9
x/3 -8 =12
x/3 = 12+ 8
x/3 = 20
x= 20(3)
x= 60
Answer is <span>B.
Quadrant II </span>
Answer: ![12\ \text{min}](https://tex.z-dn.net/?f=12%5C%20%5Ctext%7Bmin%7D)
Step-by-step explanation:
Given
It takes 20 min and 30 min for a person and his friend to paint a wall individually i.e.
In 1 min they cover
part and
part of wall respectively.
If the work together, 1 minute work is
![\Rightarrow \dfrac{1}{20}+\dfrac{1}{30}\\\\\Rightarrow \dfrac{3+2}{60}\\\\\Rightarrow \dfrac{5}{60}](https://tex.z-dn.net/?f=%5CRightarrow%20%5Cdfrac%7B1%7D%7B20%7D%2B%5Cdfrac%7B1%7D%7B30%7D%5C%5C%5C%5C%5CRightarrow%20%5Cdfrac%7B3%2B2%7D%7B60%7D%5C%5C%5C%5C%5CRightarrow%20%5Cdfrac%7B5%7D%7B60%7D)
Time required will be reciprocal of it
![\Rightarrow \dfrac{60}{5}=12\ \text{min}](https://tex.z-dn.net/?f=%5CRightarrow%20%5Cdfrac%7B60%7D%7B5%7D%3D12%5C%20%5Ctext%7Bmin%7D)